Question

Referring to the figure, find the value of x

Answer 1

x = 3

Explanation:

• The Triangle Sum Theorem says that the sum a triangle's interior angles is 90°.

Thus, we find x by setting the sum of the angles equal to 90:

72 + 5x + x = 90

(72 + 6x = 90) - 72

(6x = 18) / 6

x = 3

Thus, x = 3.